Ensemble Rûm is an Istanbul-based early Ottoman music ensemble founded in 2023 and directed by music historian and musician Dr Hasan Baran Fırat. Working from primary sources—including Ali Ufkî, Dimitrie Cantemir, Nâyî Mustafa Kevserî and Nâyî Osman Dede—the ensemble performs on reconstructed period instruments. Its Ottoman-Turkish-centred programmes also engage, where historically relevant, with Greek, Italian, Arabic, Persian, Kurdish and Armenian repertories from the wider lands of Rûm. Through narrative, research-led productions, Ensemble Rûm brings a historically grounded Ottoman and eastern Mediterranean voice to international early-music practice, connecting music with social history, cultural exchange and living artistic experience.